Electric regulation.



\ KALM J. L. CREVELING.

ELECTRIC REGULATION. APPLICATION FI'LEO JUNE 2:. mo.

1 ,223 ,3 1 3. Patented Apr. 17, 1917 *F V v v i it WITNESSES INVENTOH UNITED STATES PATENT OFFICE.

' JOH N L. GBEVELING, OF NEW YORK, N. Y., ASSI GNOB, T SAFETY CAB HEATING AND LIGHTING COMPANY, A CORPORATION OF NEW JERSEY.

ELECTRIC REGULATION.

v To all whom it may concern.

Be .it known that 1, JOHN L. CRnvaLINo, a resident of New York, in the county and Stateof New York, have invented certain new and useful Improvements in Electric Regulation, as set forth in the annexed 1 s ecificatififi and drawing, forming a part t iereof. a My invention "pertainfio that class of electric regulation in which it is desired to a v supplied to the translating devices from the automatically govern an electric circuit.

- (My invention hasfor its particular object to provide a means whereby the voltage 'iupon' a translation circuit may be held coniszsesm throughout variations in. voltage at the source from which the said circuit is fed and throughout widechanges in load. 1A furthervobject of my invention is to 'royide means whereby an automatic reguating'tdevioe may have its capacity greatly- -;increased. v ilhe drawing is a diagrammatic repre :sentation of a system of electrical regulation comprehending my invention. In the drawing 1 represents a dynamo or .generator of any suitable type from the posi- '-'tive terminal of which the lead 2 is carried to one, side of the automatic switch 3, the :tother; side of which is connected with the 30. main =4 which is in connection with the storh age-battery 5-and one side of the lamps or translating devices 6. The other side of the lamps or translating devices is connected to'the main 7 which is carried to one side of the coil 8 from the other side of which 7 continues to one terminal of the resistance device 9 the opposite terminalof which is carried by the lead 10 to one side of the storage battery 5 and the negative brush of the generator. The resistance device 9 is preferably of the carbon disk variety having its resistance controlled by the lever 11 normally drawn downwardly by the adj ustable sprin 12 in such manner as totend to compress t e carbons 9 and lower the resistance thereof. The lever 11 is provided with, a core of magnetizable material 13 surrounded by the winding 14 in shunt across the translation circuit as by wires 15 and 16. .17 is an adjustablescrew to limit the travel of the lever 11. The coil Sis provided with the core 18 attached to the ivoted levar-19 normallymlrawn against t 1e stop 20 as by adjustable spring 21 and adapted when p swung in an upward direction to sweep Specification at Letters Patent.

' spring 12 in such manner as to decrease the.

.constant in an )bvious manner t Patented Apr, 1 '7. 1 .01 '7 Application tiled June as, 1910. Sen-111170.56 me.

across the contacts oi the resistance device 22 so as to reduce the resistance thereof. The resistance :levice 22 is in shunt across the resistance r] zvice 9 as by means of wires 23,41nd 24, and if desired a ermanent re sistance may be placed in either of these wires as is indir ated in wire 23,

The operatic! of my improvement is substantially as foIlows:

If the generator be at rest current will be 55 battery 5 thror gh main a, translating devices 6, main 7, coil 8, main 7, resistance device 9 and lead 10 to the battery. If now the generator be started and brought up to the voltage it which the switch 3 is set to close and if this voltage be in "excess of that of the storage battery 5, current will fiow from the generator to the translating devices and lessen the amount drawn from the battery. It the generator output be brought up to where the same-is supplyin the total load tc the translating devices an charging the battery, the voltage across the translation circuit will tend to rise in-a well-known manner. This will tend to cause the current flowing from the main 4 through wire 15, coil 14, wire 16 to increase and lift the cot-e 13 against the action of pressure upon :he carbons 9 and increase the resistance tl ereof. By properly designing this portion of the apparatus and prop-' erly adjusting the 5 ring 12, the resistance 9 will besomanipultted as to hold the voltage upon the translation circuit ractica-lly hroughoutf a certain range limited by the :carrying capacity and also by the resistance varying capacity of the'carbon pile 9. I so construct the carbon pile 9 and the apparatus for operating tie same that the resistance across 9 may, rnder certain conditions, be caused to,be C01 siderable -in fact, I so. ad.- just this portion ofthe apparatus that the pressure uponthe disks 9 may be relieved so as to increasa the resistance thereof andincrease the ran e in this direction as much as practicable. Jurrent flowing through the translation ClICl it and passing through the coil 8 tends to ift the core 18 against the action of spring 21 and throw the shunt in,

ring 21' that when the maximum current esired to be'carried through the resistance 9 is flowing through the coil 8, the same will lift the lever 18 and shunt part of the 5 current away from the resistance 9 through resistance 22. As the load upon the translation circuit "is increased, the action of the coil 8 is to decrease the resistance 22 and shuntaway more and more current from the A 10 resistance 9 tending at all timesto keep the current passin "through the resistance -9 as near as possib e the normal amount desired to have regulated 'by the i said resistance.

which iscapable of producing the-drop res quired upon-the line. Therefore, if the current in the' translating devices 'fall below the maximum desired to be carried by the resistance 9, theshunt around the resistance 9 will be broken at 22 as shown in the drawingeand the pressure upon the carbons 9 will 'mani ulated through the instrumentality of coi 14 to hold the volta e upon the translation circuit constant.- f now considerable more load be thrown upon the 25 translation circuit, for example, twice as much current-passed through the coil 8 as. is desired to be carried in the carbonpile 9, the coil 8 will cause the lever 19 to take'such position that substantially one-half of this current will be shunted around the resistance 9 so a's-gto, lessen the current necessarily' carried by the said resistance. Then chan es 'n' voltage across the translation circuit wi lfbe rectified as above through the 85 instrumentality of eoil'14 and carbon resistancej 9. If the load on the translation circuit be again increased more resistance will be cutout at 22 and more of the load carried around the variable l'es'istanoe i). If. "fll' now the load ecrease the reverse operation wilIjtakejplace and theresistance'22 willbe inereasedso asto' throw more and more of the'diminiahin' load upon the resistance 9.

- It will beob oils that my inventionpro- 4t diices' a translation circuit rcgulator'capable' I Witnesses:

1 ,22a, ais

the carbon resistance 9 and for manipulat ing the resistance 22and it will be obvious that I may use any of the preferred types of .apparatus for this purpose.

I do not wish to limit myself to any exact constructions-shown in the drawing as the same is merely a diagmm intendedlto indicate a system embodying my invention and it will be obvious that many changes in construction ma be made. without departing from the s lrit of said invention which is as set forth -!Il the following claim:

An electric system comprising a work circuit, a generat'orfor supplying the same, a reslstauce'in' series in the circuit, means for acting upon said resistance, means in shunt to the translation circuit for controllingthe action of the last'nan edmcans with a tendency to hold the voltage constant on the translation circuit, by increasing said. re-

sistance, a'circuit in shunt to the said re-.

sistance including a variable resistance,

means for closing the'l'atter circuit and simultaneouslyinserting its resistance, and

current controlled means for actuating said circuit -closing means and operating to cause said shunt resistance to vary according to the load on the translation c rcuit.

JOHN L. QREYELING HA L, p M. HILIDGK. 

